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But I don't want a pickup truck engine in my 5 ton! Sorry, just had to say it. (Its all good). I will try and be disciplined about making real measurements.

I looked up the dual line mod, seems like a weekend job, very straight forward. I have my baseline. My m37 kicks the 921s arse up to about 45. I know, that bar is pretty low ...

I will check the modulator cable adjustments first. Ive fallen prey to not doing the obvious first before (du-Ohh). Are you saying the 8.3s (stock) are even worse? Mark

What is/are some basic mods to improve the performance of the NHC250? I don't want to go crazy, I sure as heck don't want to "roll coal", but with 53" tires the ol girl is about as gutless as the day is long :sad:. I have read through the threads and see a moderate turbo with a modest bump in...